A couple general "glaring" usability issues:
1) Links are now hard to distinguish from normal text. Within the forum, they are easier to find -- but within articles -- I see zero difference between normal and link text except that when I hover over a link in an article - I see a finger. That said, there are no visual clues as to where to find these links so they are simply missed many times.
Edit: (this is using a PC, not mobile platform). I'm not sure if there is a difference.
2) Lack of dates on articles (and also date/time stamp on messages in the forum) cause some issue. It's difficult to know how dated old feedback in the forum is. Even worse, there are articles that apply to contests without any date on the article. So it's difficult to tell if it is reasonable to believe the contests are over or not. The "ask.audio" contest comes to mind. It's not difficult to "figure out" - but it is certainly a waste of time to sort through arriving at this conclusion vs. having date-stamped articles.